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+% $Header: tgreekl.mf,v 1.1 88/01/15 13:14:46 simpson Rel $
+% $Log: tgreekl.mf,v $
+%Revision 1.1 88/01/15 13:14:46 simpson
+%initial release
+%
+%Revision 0.1 87/12/11 19:01:27 simpson
+%beta test
+%
+% This lowercase Greek alphabet was prepared by D. E. Knuth in December, 1979,
+% inspired by the Monotype faces used in {\sl The Art of Computer Programming}.
+% (It has been designed for math formulas, not Greek texts.)
+% The programs were revised for the new \MF\ conventions in 1985.
+
+cmchar "Lowercase Greek alpha";
+beginchar(oct"141",11u#,x_height#,0);
+italcorr max(1/3x_height#*slant+.5hair#+.5u#,x_height#*slant-.5u#);
+adjust_fit(0,0); pickup fine.nib;
+pos0(hair,0); pos1(vair,-90); pos2(curve,-180); pos3(vair,-270);
+z4=(w-3.25u,9/16h); z5=(w-2.75u,.5[vair,y4]);
+numeric theta; theta=angle(z4-z5)-90;
+pos4(stem,theta); pos5(stem,theta);
+pos6(vair,90); pos7(hair,180);
+rt x0r=hround(w-u); x1=x3=.5w-u; lft x2r=hround(1.5u-.5curve);
+x6=w-u; x7+.5hair=hround(w+.5hair-epsilon);
+top y0=vround .8[bar_height,h]; bot y1r=bot y6l=-oo;
+y2=.5[y1,y3]; top y3r=h+oo; y7=1/4bar_height;
+filldraw stroke z0e{down}...pulled_arc.e(1,2) & pulled_arc.e(2,3)
+ ...z4e---z5e...z6e{right}...{up}z7e; % diagonal, bowl, and hook
+math_fit(-.3x_height#*slant+.5curve#-u#,1/3x_height#*slant+.5hair#+.5u#);
+penlabels(0,1,2,3,4,5,6,7); endchar;
+
+cmchar "Lowercase Greek beta";
+beginchar(oct"142",9.5u#,asc_height#,desc_depth#);
+italcorr .5[x_height#,asc_height#]*slant-u#;
+adjust_fit(0,0); pickup fine.nib;
+pos0(hair,180); pos1(hair,180); pos2(vair,90);
+pos3(stem,0); pos4(vair,-90); pos5(hair,-180);
+pos6(vair,-270); pos7(curve,-360); pos8(vair,-450); pos9(hair,-540);
+x0=x1=x9; lft x0l=hround(1.5u-.5hair); x2=x4=x6=x8=.5w+.25u;
+rt x3r=hround(w-1.5u); rt x7r=hround(w-1.5u+.5curve); rt x5l=hround(x4-u);
+bot y0=-d; y1=top y6r=x_height; top y2r=h+oo; y3=.5[y2,y4];
+y5=.5[y4,y6]; top y6r-bot y4r=vstem+eps; bot y8=-oo; y7=y9=.5[y6,y8];
+if y6l<y4l: y6l:=y4l:=y5; fi
+filldraw stroke z0e---z1e...pulled_arc.e(2,3)
+ & pulled_arc.e(3,4)...{up}z5e; % stem and upper bowl
+filldraw stroke z5e{up}...pulled_arc.e(6,7)
+ & pulled_arc.e(7,8)...{up}z9e; % lower bowl
+math_fit(desc_depth#*slant+.5hair#-u#,.7x_height#*slant+.5curve#-1.5u#);
+penlabels(0,1,2,3,4,5,6,7,8,9); endchar;
+
+cmchar "Lowercase Greek gamma";
+beginchar(oct"143",10u#,x_height#,desc_depth#);
+italcorr x_height#*slant-.5u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(hair,180); pos2(vstem+dw,90);
+pos4(hair,0); pos5(vair,-90); pos6(hair,-180); pos7(hair,-180);
+bot y1=.5772156649h; top y2r=h+oo; y4=y6=-.5d;
+bot y5r=-d-o; top y7=h;
+lft x1r=hround(.5u-.5hair); x2=3u; rt x4r=hround(w-2u); x5=.5[x4,x6];
+rt x4r-lft x6r=hround 1/3[hair,stem]+eps; rt x7l=hround(w-u);
+if x4l<x6l: x4l:=x6l:=x5; fi
+pos3(hair,angle(z4-z2)+90); x3=superness[x2,x4]; y3=superness[y4,y2];
+filldraw stroke z1e{up}...z2e{right}...z3e{z4-z2}
+ ...z4e{down}...{left}z5e; % arc
+filldraw stroke z5e{left}...z6e{up}..{2(x7-x6),y7-y6}z7e; % stem
+math_fit(-.5772156649x_height#*slant,ic#-u#);
+penlabels(1,2,3,4,5,6,7); endchar;
+
+cmchar "Lowercase Greek delta";
+beginchar(oct"144",8u#,asc_height#,0);
+italcorr .9asc_height#*slant+.5hair#-1.5u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(hair,-180); pos2(vair,-90);
+numeric theta; theta=angle(18u,-h);
+pos3(stem,theta+90); pos4(stem,theta+90); pos5(1/4[hair,stem],20);
+pos6(vair,-90); pos7(curve,-180); pos8(vair,-270);
+rt x1l=hround(w-2u+.5hair); x2=.5w; x3r=3u; rt x5r=hround(w-u);
+x4=x6=x8=.5w+.5u; lft x7r=hround(1.5u-.5curve);
+y1=.9h; top y2l=h+oo; top y8r=x_height+oo; y4=y8;
+z4-z3=whatever*(18u,-h); y5=y7=.5[y6,y8]; bot y6=-oo;
+filldraw stroke z1e{x2-x1,3(y2-y1)}...z2e{left}...z3e---z4e
+ ....z5e{down}...pulled_arc.e(6,7) & pulled_arc.e(7,8); % hook and bowl
+math_fit(-.3x_height#*slant+.5curve#-u#,.7x_height#*slant-.5u#);
+penlabels(1,2,3,4,5,6,7,8); endchar;
+
+cmchar "Lowercase Greek epsilon";
+beginchar(oct"145",8u#,x_height#,0);
+italcorr x_height#*slant+.5hair#-2u#;
+adjust_fit(0,0); pickup fine.nib;
+pos0(bar,90); pos1(bar,90); pos2(curve,180);
+pos3(vair,270); pos4(hair,300); pos6(bar,90); pos7(bar,90);
+x1=.5w+.5u; x0=x1+u; lft x2r=hround(1.5u-.5curve); x3=.5[x0,x1];
+x4r=good.x(w-u); x5=w+.5u; x6=x0; z7=z2l;
+top y0r=top y1r=h; y2=y5=y6=bar_height; bot y3r=-oo;
+path p; p=z3r{right}...{up}z5;
+numeric t; t=ypart(((x4r,y3r)--(x4r,y5))intersectiontimes p);
+y4r=ypart point t of p;
+filldraw circ_stroke z0e..pulled_arc.e(1,2) & pulled_arc.e(2,3)
+ ...z4e{direction t of p}; % arc
+filldraw circ_stroke z6e--z7e; % bar
+math_fit(-.3x_height#*slant+.5curve#-u#,ic#);
+penlabels(0,1,2,3,4,5,6,7); endchar;
+
+cmchar "Lowercase Greek zeta";
+beginchar(oct"146",9u#,asc_height#,desc_depth#);
+italcorr .75[x_height#,asc_height#]*slant-1.5u#;
+adjust_fit(0,0); pickup fine.nib;
+pos0(hair,-360); pos1(vair,-270); pos2(hair,-180); pos3(vair,-90);
+numeric theta; theta=90-angle(25u,x_height); slope:=-x_height/25u;
+pos6(stem,theta); pos7(vair,-90); pos8(vair,-135);
+lft x0l=hround 3.5u; x1=x3=.5[x0,x2]; rt x2l=hround max(rt x0r,w-2u)+eps;
+top y0=h; top y3l=bot y1l+vstem+eps=vround(y0-.25(h-x_height)); y2=.5[y1,y3];
+if y1r>y3r: y1r:=y3r:=y2; fi
+lft x4l=hround u; x4r-x4l=(hround .6[vair,stem])-fine;
+x6+.5u=x7=w-2u; x8=.5w+.75u;
+y6=-.1d; y8=-3/4d-oo; bot y7r=-d-oo;
+ellipse_set(3l,4l,5l,6l); ellipse_set(3r,4r,5r,6r);
+y4l:=.9[y6,y4l]; y4=y4r:=.9[y6,y4r];
+filldraw circ_stroke z0e{down}...z1e{right}...{up}z2e; % opening hook
+filldraw circ_stroke z8e{x7-x8,2(y7-y8)}...z7e{right}
+ ...z6e---z5e....{up}z4e
+ ..tension 1 and atleast1.5..{right}z3e...{down}z2e; % main stroke
+math_fit(-.2asc_height#*slant-.5u#,0);
+penlabels(0,1,2,3,4,5,6,7,8); endchar;
+
+cmchar "Lowercase Greek eta";
+beginchar(oct"147",9u#,x_height#,desc_depth#);
+italcorr .8x_height#*slant+.5stem#-u#;
+adjust_fit(0,0); pickup fine.nib;
+x0=0; x1=x2; pos2(stem,0); lft x2l=hround(2.5u-.5stem); y2-.5stem=-oo;
+hook_in(0,a,1); % opening hook
+filldraw circ_stroke z2e--z1e; % left stem
+x4+.5stem=hround(w-1.5u+.5stem); ital_arch(2,3,4); % arch
+pos5(stem,0); x5=x4; y5-.5stem=-d-o;
+filldraw circ_stroke z5e--z4e; % right stem
+math_fit(-2/3x_height#*slant+.5hair#+.5u#,ic#-1/3x_height#*slant);
+penlabels(0,a,1,2,3,4,5); endchar;
+
+cmchar "Lowercase Greek theta";
+beginchar(oct"150",8.25u#,asc_height#,0);
+italcorr .7asc_height#*slant+.5curve#-u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(vair,90); pos2(curve,180); pos3(vair,270); pos4(curve,360);
+x1=x3=.5w; lft x2r=hround(1.5u-.5curve); x4=w-x2;
+top y1r=h+oo; y2=y4=.5[y1,y3]; bot y3r=-oo;
+filldraw stroke pulled_arc.e(1,2) & pulled_arc.e(2,3)
+ & pulled_arc.e(3,4) & pulled_arc.e(4,1); % bowl
+pos2'(bar,90); pos4'(bar,90); z2'=z2l; z4'=z4l;
+filldraw stroke z2'e--z4'e; % bar
+math_fit(-.3asc_height#*slant-u#+.5curve#,ic#-.5u#);
+penlabels(1,2,3,4); endchar;
+
+cmchar "Lowercase Greek iota";
+beginchar(oct"151",5u#,x_height#,0);
+italcorr 1/3x_height#*slant+.5hair#+.5u#;
+adjust_fit(if monospace: u#,u# else: 0,0 fi); pickup fine.nib;
+pos1(stem,0); lft x1l=hround(1.5u-.5stem); y1+.5stem=h+oo;
+x2=x1-.25u; x4=w; hook_out(2,3,4)(skewed); % closing hook
+filldraw circ_stroke z1e{down}...{-u,-x_height}z2e; % stem
+math_fit(0,ic#); penlabels(1,2,3,4); endchar;
+
+cmchar "Lowercase Greek kappa";
+beginchar(oct"152",9u#,x_height#,0);
+italcorr 1/3x_height#*slant+.5hair#+.5u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(stem,0); pos2(stem,0); pos3(vair,90); pos4(vair,90); pos5(flare,90);
+x1=x2=x3; lft x1l=hround(1.5u-.5stem); y1+.5stem=h+oo; y2-.5stem=-oo;
+filldraw z1l---z2l..z2r---z1r..cycle; % stem
+y3=bar_height; top y4r=h; x4+.5flare=hround(w-1.5u); z5r=z4r;
+path p,q; p=z3l{right}..{right}z4l; q=z5r{right}..z5l{left}...cycle;
+numeric t; t=ypart(p intersectiontimes q);
+filldraw stroke z3e{right}..{right}z4e; % upper diagonal
+filldraw subpath(0,t) of q--cycle; % bulb
+pos7(stem,0); pos8(vair,90); pos9(hair,180);
+x9+.5hair=hround(w+.5hair-epsilon); y9=1/3x_height;
+lft x7l=hround(w-2.75u-.5stem); y7=1/2y3; x8=w-1.2u; bot y8l=-oo;
+filldraw stroke z3e{right}...z7e{down}
+ ...z8e{right}...{up}z9e; % lower diagonal
+math_fit(0,ic#); penlabels(1,2,3,4,5,7,8,9); endchar;
+
+cmchar "Lowercase Greek lambda";
+beginchar(oct"153",10.5u#,asc_height#,0);
+adjust_fit(0,0); pickup fine.nib;
+pos1(vair,90); lft x1=hround .1u; top y1r=h;
+x2=x1+2u; y2=.7[x_height,h]; x3=w-2u; bot y4=-oo; y3=max(.07h,y4+eps);
+z4-(.25u,0)=whatever[z2,z3]; numeric theta; theta=angle(z2-z3)-90;
+pos2(stem,theta); pos3(stem,theta); pos4(stem,0);
+filldraw circ_stroke z1e{right}...z2e---z3e
+ ...{2(x4e-x3e),y4e-y3e}z4e; % long diagonal
+y5=.5[bar_height,x_height]; z5=whatever[z2,z3];
+x6=1.5u; y6-.5stem=-oo; pos5(hair,theta-90); pos6(stem,angle(z5-z6)-90);
+filldraw circ_stroke z6e--z5e; % short diagonal
+penlabels(1,2,3,4,5,6); endchar;
+
+cmchar "Lowercase Greek mu";
+beginchar(oct"154",9u#,x_height#,desc_depth#);
+italcorr 1/3x_height#*slant+.5hair#+.5u#;
+adjust_fit(0,0); pickup fine.nib; interim superness:=more_super;
+pos1(stem,-180); pos2(stem,-180); x1=x2=x3; lft x1r=hround(1.5u-.5stem);
+y1+.5stem=h+oo; y2-.5stem=-d-o;
+filldraw z1r---z2r..z2l---z1l..cycle; % left stem
+pos3(stem,-180); pos4(vair,-90); pos5(hair,0); x4=.5[x3,x5];
+pos6(stem,0); rt x6r=hround(w-2.5u+.5stem);
+x5=x6=x7; x9=w; hook_out(7,8,9); % closing hook
+y3=.7[y4,y5]; bot y4r=-oo; y5=.57h; y6+.5stem=h;
+filldraw stroke super_arc.e(3,4)...{up}z5e; % left stem and arc
+filldraw circ_stroke z6e--z7e; % right stem
+math_fit(desc_depth#*slant+.5stem#-u#,ic#);
+penlabels(1,2,3,4,5,6,7,8,9); endchar;
+
+cmchar "Lowercase Greek nu";
+beginchar(oct"155",8.5u#,x_height#,0);
+italcorr x_height#*slant+.5stem#-u#;
+adjust_fit(0,0); pickup fine.nib;
+pos3(vair,-90); pos4(stem,0); bot y3r=0; y4+.5stem=h+oo;
+x3-.5stem=hround(1.5u-.5stem); x4+.5stem=hround(w-1.5u+.5stem);
+filldraw circ_stroke z4e{down}...{-36u,-h}z3e; % diagonal
+pickup tiny.nib; pos1(stem,0); pos2(stem,0);
+top y1=h+min(oo,serif_drop); bot y2=0; x1=x2=x3;
+z=((z4{down}...{-36u,-h}z3)intersectionpoint((x2r,0)--(x2r,h)));
+filldraw z1l--z2l--z--z1r--cycle; % stem
+sloped_serif.l(1,2,a,1/3,jut,serif_drop); % upper left serif
+math_fit(0,ic#-1/3x_height#*slant-.5u#); penlabels(1,2,3,4); endchar;
+
+cmchar "Lowercase Greek xi";
+beginchar(oct"156",9u#,asc_height#,desc_depth#);
+italcorr .75[x_height#,asc_height#]*slant-2u#;
+adjust_fit(0,0); pickup fine.nib;
+pos10(hair,-720); pos11(vair,-630); pos12(hair,-540); pos13(vair,-450);
+lft x10l=hround 1/3w; x11=x13=.5[x10,x12]; rt x12l=hround(w-2.5u);
+top y10=h; top y13l=bot y11l+vstem+eps=vround(y10-.25(h-x_height));
+y12=.5[y11,y13]; if y11r>y13r: y11r:=y13r:=y12; fi
+pos0(curve,-360); pos1(vair,-270); pos2(hair,-180); pos3(vair,-90);
+numeric theta; theta=90-angle(22u,x_height); slope:=-x_height/22u;
+pos6(stem,theta); pos7(vair,-90); pos8(vair,-135);
+lft x0l=hround u; x1=x3=x11; x2=x12;
+y0=.5[y13,y1]; top y3l=vround .5h=bot y1l+vstem+eps; y2=.5[y1,y3];
+if y1r>y3r: y1r:=y3r:=y2; fi
+lft x4l=hround u; x4r-x4l=hround .5[vair,stem]-fine;
+x6=x7=w-2u; x8=.5w+.5u; y6=-.3d; y8=-3/4d-oo; bot y7r=-d-oo;
+ellipse_set(3l,4l,5l,6l); ellipse_set(3r,4r,5r,6r);
+y4l:=.9[y6,y4l]; y4=y4r:=.9[y6,y4r];
+filldraw circ_stroke z10e{down}...z11e{right}...{up}z12e; % opening hook
+filldraw stroke z12e{up}...z13e{left}...z0e{down}
+ ...z1e{right}...{up}z2e; % upper arc
+filldraw circ_stroke z8e{x7-x8,2(y7-y8)}...z7e{right}...z6e
+ ---z5e...{up}z4e...{right}z3e...{down}z2e; % main stroke
+math_fit(-.2asc_height#*slant-.5u#,0);
+penlabels(0,1,2,3,4,5,6,7,8,10,11,12,13); endchar;
+
+% Stolen from romanl.mf
+cmchar "Lowercase Greek omicron";
+beginchar(oct"157",9u#,x_height#,0);
+italcorr .7x_height#*slant;
+adjust_fit(if monospace: .5u#,.5u# else: 0,0 fi);
+penpos1(vair,90); penpos3(vair',-90);
+penpos2(curve,180); penpos4(curve,0);
+x2r=hround max(.5u,1.25u-.5curve);
+x4r=w-x2r; x1=x3=.5w; y1r=h+vround 1.5oo; y3r=-oo;
+y2=y4=.5h-vair_corr; y2l:=y4l:=.52h;
+penstroke pulled_arc.e(1,2) & pulled_arc.e(2,3)
+ & pulled_arc.e(3,4) & pulled_arc.e(4,1) & cycle; % bowl
+penlabels(1,2,3,4); endchar;
+
+cmchar "Lowercase Greek pi";
+beginchar(oct"160",10u#,x_height#,0);
+italcorr x_height#*slant+.5stem#-u#;
+adjust_fit(0,0); pi_stroke; % hook and bar
+pos4(hair,0); pos6(hair,0); x4=3.5u; x6=w-4u; y4=y6=y2;
+x5=3u; x7=w-2.5u; y5=y7=.5stem-oo;
+pair v[]; v1=(z4-z5) xscaled 3.14159; v2=(z6-z7) xscaled 3.14159;
+pos5(stem,angle v1-90); pos7(stem,angle v2-90);
+filldraw circ_stroke z5e{v1}...{up}z4e; % left stem
+filldraw circ_stroke z7e{v2}...{up}z6e; % right stem
+math_fit(-.7x_height#*slant+.5hair#+.5u#,ic#-1/3x_height#*slant);
+penlabels(1,2,3,4,5,6,7); endchar;
+
+cmchar "Lowercase Greek rho";
+beginchar(oct"161",8.25u#,x_height#,desc_depth#);
+italcorr .7x_height#*slant+.5curve#-u# if math_fitting:-.5u# fi;
+adjust_fit(0,0); pickup fine.nib;
+pos1(stem,180); pos2(stem,180); pos3(vair,90);
+pos4(curve,0); pos5(vair,-90); pos6(hair,-180);
+lft x2r=hround(1.5u-.5stem); x1=x2=x6; x3=x5=.5[x2,x4];
+rt x4r=hround(w-1.5u+.5curve);
+y1-.5stem=-d-o; y2=y4=y6=.5[y3,y5]; top y3r=h+oo; bot y5r=-oo;
+filldraw circ_stroke z1e..pulled_arc.e(2,3) & pulled_arc.e(3,4)
+ & pulled_arc.e(4,5) & pulled_arc.e(5,6); % stem and bowl
+math_fit(desc_depth#*slant+.5stem#-u#,ic#);
+penlabels(1,2,3,4,5,6); endchar;
+
+cmchar "Lowercase Greek sigma";
+beginchar(oct"162",10.25u#,x_height#,0);
+italcorr x_height#*slant+.5stem#-u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(vstem,90); pos2(stem,0); pos3(vair,-90);
+pos4(stem,-180); pos5(vstem,-270); pos6(vstem,-270);
+x1=x3=x5=.5[x2,x4]; rt x2r=hround(w-2.5u);
+lft x4r=hround(1.5u-.5curve);x6=w-1.5u;
+top y1r=h; y2=y4=.5[y1,y3]; bot y3r=-oo; y5=y6=y1;
+filldraw circ_stroke z6e..pulled_arc.e(5,4) & pulled_arc.e(4,3)
+ & pulled_arc.e(3,2) & pulled_arc.e(2,1); % ear and bowl
+math_fit(-.3x_height#*slant+.5curve#-u#,ic#-1/3x_height#*slant);
+penlabels(1,2,3,4,5,6); endchar;
+
+cmchar "Lowercase Greek tau";
+beginchar(oct"163",9u#,x_height#,0);
+italcorr x_height#*slant+.5stem#-u#;
+adjust_fit(0,0); pi_stroke; % hook and bar
+pos4(hair,0); pos5(stem,0);
+x4=x5; x5-.5stem=hround(.5w-.5u-.5stem); y4=y2; y5-.5stem=-oo;
+filldraw circ_stroke z5e--z4e; % stem
+math_fit(-.7x_height#*slant+.5hair#+.5u#,-.5u#);
+penlabels(1,2,3,4,5); endchar;
+
+cmchar "Lowercase Greek upsilon";
+beginchar(oct"164",9u#,x_height#,0);
+italcorr x_height#*slant;
+adjust_fit(0,0); pickup fine.nib; interim superness:=more_super;
+x0=0; x2=x3+.25u; pos3(stem,-180); lft x3r=hround(2.5u-.5stem);
+hook_in(0,1,2)(skewed); % opening hook
+pos2'(stem,-180); z2'=z2; pos4(vair,-90); pos5(hair,0);
+x4=.5w+u; rt x5r=hround(w-.5u); y3=.7[y4,y5]; bot y4r=-oo; y5=.57h;
+filldraw stroke z2'e{-u,-x_height}...super_arc.e(3,4)
+ ..tension atleast 1.05..{up}z5e; % left stem and arc
+v_bulb(5,6); % closing bulb
+math_fit(-2/3x_height#*slant+.5hair#+.5u#,2/3ic#);
+penlabels(0,1,2,3,4,5,6); endchar;
+
+cmchar "Lowercase Greek phi";
+beginchar(oct"165",11u#,asc_height#,desc_depth#);
+italcorr .7x_height#*slant+.5curve#-u# if math_fitting:-.5u# fi;
+adjust_fit(0,0); pickup fine.nib;
+numeric light_curve; light_curve=hround(.5[stem,curve]-2stem_corr);
+pos1(vair,90); pos2(light_curve,180); pos3(vair,270); pos4(light_curve,360);
+x1=x3=.5w; lft x2r=hround(1.5u-.5light_curve); x4=w-x2;
+top y1=x_height+oo; y2=y4=.5[y1,y3]; bot y3=-oo;
+filldraw stroke pulled_arc.e(1,2) & pulled_arc.e(2,3)
+ & pulled_arc.e(3,4) & pulled_arc.e(4,1); % bowl
+pos5(hair,0); pos6(hair,0); x5=x6=.5w; top y5=h; bot y6=-d-oo;
+filldraw stroke z5e--z6e; % stem
+math_fit(-.3x_height#*slant+.5curve#-u#,ic#);
+penlabels(1,2,3,4,5,6); endchar;
+
+cmchar "Lowercase Greek chi";
+beginchar(oct"166",11u#,x_height#,desc_depth#);
+italcorr x_height#*slant+.5hair#-1.5u#;
+adjust_fit(0,0); pickup fine.nib;
+pos1(hair,180); pos2(vair,80); pos5(vair,80); pos6(hair,180);
+x1-.5hair=hround-.5hair; x6=w-x1; x2=w-x5=u;
+y1=y2l-h/8; top y2r=h+oo; bot y5l=-d-oo; y6=y5r+h/8;
+z0=.5[z2,z5]; z2'=z2l+(.5u,0); z5'=z5r-(.5u,0);
+numeric theta; theta=angle(z5'-z2')+90;
+pos3(stem,theta); pos4(stem,theta);
+y3r=y2r-h/8; y4l=y5l+h/8; z3l=whatever[z2',z0]; z4r=whatever[z0,z5'];
+filldraw stroke z1e{up}...z2e{right}...z3e{z4r-z3l}
+ ..z4e{z4r-z3l}...{right}z5e...{up}z6e; % major diagonal and hooks
+x8=w-x7=2u; y7+.5hair=h; y8-.5hair=-d;
+numeric theta; theta=angle(z7-z8)-90;
+pos7(hair,theta); pos8(hair,theta);
+filldraw z7l---z8l..z8r---z7r..cycle; % minor diagonal
+math_fit((desc_depth#-x_height#)*slant+ic#,ic#);
+penlabels(0,1,2,2',3,4,5',5,6,7,8); endchar;
+
+cmchar "Lowercase Greek psi";
+beginchar(oct"167",11u#,asc_height#,desc_depth#);
+italcorr x_height#*slant;
+adjust_fit(0,0); pickup fine.nib; interim superness:=more_super;
+x0=0; x2=x3+.25u; pos3(stem,-180); lft x3r=hround(2.5u-.5stem);
+hook_in(0,1,2)(skewed); % opening hook
+pos2'(stem,-180); z2'=z2; pos4(vair,-90); pos5(hair,0);
+x4=.5w+u; rt x5r=hround(w-.5u);
+y3=.7[y4,y5]; bot y4r=-oo; y5=.57x_height;
+filldraw stroke z2'e{-u,-x_height}...super_arc.e(3,4)
+ ..tension atleast 1.05..{up}z5e; % left stem and arc
+v_bulb(5,6); % closing bulb
+pos7(hair,0); pos8(hair,0); x7=x8=.5w+.5u; top y7=h; bot y8=-d-oo;
+filldraw stroke z7e--z8e; % stem
+math_fit(-2/3x_height#*slant+.5hair#+.5u#,2/3ic#);
+penlabels(0,1,2,3,4,5,6,7,8); endchar;
+
+cmchar "Lowercase Greek omega";
+beginchar(oct"170",11u#,x_height#,0);
+italcorr x_height#*slant;
+adjust_fit(0,0); pickup fine.nib;
+pos2(hair,-180); lft x2r=hround.5u; y2=y4=y6=y8=bar_height;
+y1+.5hair=h; x1=x2+.75u; pos1(hair,angle(2(x1-x2),y1-y2)+90);
+pos3(vstem+dw,-90); pos4(hair,0); pos5(vair,90);
+pos6(hair,180); pos7(vstem+dw,270); pos8(hair,360);
+bot y3r=bot y7r=-oo; top y5r=vround(.2[y4,h]+.5vair);
+x3=.5[x2,x4]; x7+.25u=.5[x6,x8]; rt x8r=hround(w-.5u);
+x5+.5stem=hround(.5w+.5stem)+eps;
+x5=.5[x4,x6]; rt x4r-lft x6r=min(stem,2hair)+2eps;
+if x4l<x6l: x4l:=x6l:=x5; fi
+filldraw circ_stroke z1e{2(x2-x1),y2-y1}...z2e{down}...z3e{right}
+ ...{up}z4e...{left}z5e; % left arc
+filldraw stroke z5e{left}...z6e{down}...z7e{right}...{up}z8e; % right arc
+v_bulb(8,9); % closing bulb
+math_fit(-bar_height#*slant,2/3ic#); penlabels(1,2,3,4,5,6,7,8,9); endchar;
+
+cmchar "Variant lowercase Greek sigma";
+beginchar(oct"014",8u#,x_height#,.5min(desc_depth#,.5x_height#));
+italcorr x_height#*slant-.5u#;
+adjust_fit(0,0); pickup fine.nib;
+numeric heavy_vair; heavy_vair=.25[vair,vstem];
+pos1(heavy_vair,-110); pos2(vair,-90);
+x1+.5heavy_vair=hround(w-u); y1=.1[y2r,bar_height];
+x2=min(.5w+u,x1r-eps); top y2l=h+oo;
+filldraw circ_stroke z1e{x2-x1,2(y2-y1)}...{left}z2e; % upper bulb
+numeric theta; theta=90-angle(16u,x_height); slope:=-x_height/16u;
+pos6(stem,theta); pos7(vair,-90); pos8(vair,-135);
+lft x4l=hround u; x4r-x4l=(hround .5[vair,stem])-fine;
+x6=x7=w-2u; x8=.5w+u; y6=.25[y8,y2]; y8=y7+1/8d; bot y7r=-d-oo;
+ellipse_set(2l,4l,5l,6l); ellipse_set(2r,4r,5r,6r); y4=y4r;
+filldraw circ_stroke z8e{x7-x8,2(y7-y8)}...z7e{right}...z6e
+ ---z5e...{up}z4e...{right}z2e; % main stroke
+math_fit(-.5x_height#*slant-.5u#,0); penlabels(1,2,4,5,6,7,8); endchar;
+